Buy, Sell and take Commissions with an internal currency system in your UNA website.  As the site owner you have the ability to buy and sell Credits for price that you set. Credits  can be bought and sold for hard currency...

Braintree payment module uses braintree API and allowing users to perform transactions using their credit and debit cards directly from the UNA website without redirecting to a 3rd party website, resulting in a better experience for the...